The inexperienced introvert couple is surrounded by extroverted bitchy gals and is rapidly developed...!

The fate of boyfriend Akiho and girlfriend Suzune, who have yet to have any sexual experience, changes dramatically when they accidentally meet their childhood friend Sayu, who has now become a full-fledged gal.

The two experience their first sexual experience at the hands of the gals, and discover the melting pot of pleasure.

When Suzune sees her boyfriend being taken advantage of by the three gals, she makes up her mind and pushes Akiho down...!?

After being awakened to pleasure by the gals, Akiho and her friends continue to engage in intense sex training with three extrovert gals.

Suzune, who has been completely developed by the gals, spends her days immersed in sex with Akiho.

And their actions with Suzune gradually escalate...!

Suzune has changed so much that she goes out naked in a coat and gets excited, and Akiho is mesmerized by the sight of her like that...

But then an extrovert guy in her class tries to make a move on Suzune...